Molecular phylogenetics of the burrowing crayfish genus <i>Fallicambarus</i> (Decapoda: Cambaridae)

Ainscough, Benjamin J.; Breinholt, Jesse W.; Robison, Henry W.; Crandall, Keith A.

doi:10.1111/zsc.12006

Cited by 16 publications

(12 citation statements)

References 36 publications

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“…For example, both our molecular phylogeny and synthetic tree confirm multiple genera are paraphyletic (figures 1 and 2). This is concordant with previous molecular studies of North American fauna where species are not monophyletic [20] and genera are not monophyletic [18]. In addition, our dataset only supports one of three families as monophyletic (figures 1 and 2).…”

Section: (A) Taxonomysupporting

confidence: 91%

A synthetic phylogeny of freshwater crayfish: insights for conservation

Owen

Bracken‐Grissom

Stern

et al. 2015

Phil. Trans. R. Soc. B

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Phylogenetic systematics is heading for a renaissance where we shift from considering our phylogenetic estimates as a static image in a published paper and taxonomies as a hardcopy checklist to treating both the phylogenetic estimate and dynamic taxonomies as metadata for further analyses. The Open Tree of Life project ( opentreeoflife.org ) is developing synthesis tools for harnessing the power of phylogenetic inference and robust taxonomy to develop a synthetic tree of life. We capitalize on this approach to estimate a synthesis tree for the freshwater crayfish. The crayfish make an exceptional group to demonstrate the utility of the synthesis approach, as there recently have been a number of phylogenetic studies on the crayfishes along with a robust underlying taxonomic framework. Importantly, the crayfish have also been extensively assessed by an IUCN Red List team and therefore have accurate and up-to-date area and conservation status data available for analysis within a phylogenetic context. Here, we develop a synthesis phylogeny for the world's freshwater crayfish and examine the phylogenetic distribution of threat. We also estimate a molecular phylogeny based on all available GenBank crayfish sequences and use this tree to estimate divergence times and test for divergence rate variation. Finally, we conduct EDGE and HEDGE analyses and identify a number of species of freshwater crayfish of highest priority in conservation efforts.

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Section: (A) Taxonomysupporting

confidence: 91%

A synthetic phylogeny of freshwater crayfish: insights for conservation

Owen

Bracken‐Grissom

Stern

et al. 2015

Phil. Trans. R. Soc. B

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“…The maximum likelihood topology and divergence dates are largely concordant with other crayfish phylogenetics studies Pedraza-Lara et al 2012;Ainscough et al 2013;Bracken-Grissom et al 2014;Owen et al 2015), but with the additional resolution of 119 taxa and 14 cave-adapted species (Fig. S1; Dataset S3).…”

Section: Phylogeny Estimation and Synthesissupporting

confidence: 82%

Phylogenetic evidence from freshwater crayfishes that cave adaptation is not an evolutionary dead‐end

et al. 2017

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Caves are perceived as isolated, extreme habitats with a uniquely specialized biota, which long ago led to the idea that caves are “evolutionary dead‐ends.” This implies that cave‐adapted taxa may be doomed for extinction before they can diversify or transition to a more stable state. However, this hypothesis has not been explicitly tested in a phylogenetic framework with multiple independently evolved cave‐dwelling groups. Here, we use the freshwater crayfish, a group with dozens of cave‐dwelling species in multiple lineages, as a system to test this hypothesis. We consider historical patterns of lineage diversification and habitat transition as well as current patterns of geographic range size. We find that while cave‐dwelling lineages have small relative range sizes and rarely transition back to the surface, they exhibit remarkably similar diversification patterns to those of other habitat types and appear to be able to maintain a diversity of lineages through time. This suggests that cave adaptation is not a “dead‐end” for freshwater crayfish, which has positive implications for our understanding of biodiversity and conservation in cave habitats.

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“…Despite this already impressive number, new species of North American crayfishes have continued to be discovered and described in recent decades due to heightened interest in crayfish taxonomy and increased availability and sophistication of molecular phylogenetic techniques. Such techniques are particularly useful in efforts to tease apart species complexes, which have long plagued North American crayfish taxonomy (e.g., Ainscough et al 2013;Thoma et al 2016;Loughman et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Lacunicambarus chimera: a new species of burrowing crayfish (Decapoda: Cambaridae) from Illinois, Indiana, Kentucky, and Tennessee

Glon

Thoma²,

Daly

et al. 2019

Zootaxa

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Lacunicambarus diogenes (Girard 1852) was, until recently, considered to be one of the most widely distributed North American crayfish species, occurring in 31 U.S. States and one Canadian province east of the North American Rocky Mountains. Glon et al. (2018) investigated this claim and found that L. diogenes sensu lato was actually a species complex. The authors redescribed L. diogenes and restricted its range to the Atlantic Coastal Plain and Piedmont ecoregions of eastern North America. In doing so, they also revealed the existence of several probable undescribed species of Lacunicambarus that were previously considered to be L. diogenes. Here, we use morphological and molecular techniques to distinguish and describe one of these species: Lacunicambarus chimera sp. nov., a large primary burrowing crayfish found in parts of the Lower Mississippi, Ohio, Tennessee and Upper Mississippi River Basins. Lacunicambarus chimera is morphologically similar to L. diogenes, from which it can be distinguished by the greater number of spines on the ventrolateral margin of its merus, its wider antennal scale terminating in a short spine, and the presence of a single longitudinal stripe on the dorsal side of its abdomen. We also provide an updated key to Lacunicambarus.

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Molecular phylogenetics of the burrowing crayfish genus Fallicambarus (Decapoda: Cambaridae)

Cited by 16 publications

References 36 publications

A synthetic phylogeny of freshwater crayfish: insights for conservation

A synthetic phylogeny of freshwater crayfish: insights for conservation

Phylogenetic evidence from freshwater crayfishes that cave adaptation is not an evolutionary dead‐end

Lacunicambarus chimera: a new species of burrowing crayfish (Decapoda: Cambaridae) from Illinois, Indiana, Kentucky, and Tennessee

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